Sheet-metal roofing-plate.



H. E. MOOMAW. SHEET METAL ROOFING PLATE.

APPLICATION FILED JAN. 2, 1913.

1,090,330. Patented Mar. 17, 1914.

C1 Hominy UNITED STATES PATENT OFFICE.

HENRY E. MOOMAW, 0F CHATTANOOGA, '1EIININIESSIEE.v

SHEET-METAL ROOFING-PLATE.

To all whom it may concern Be it known that I, HENRY E. Mooimw, acitizen of the United States of America, and a resident of Chattanooga,county of Hamilton, State of Tennessee, have invented certain new anduseful Improvements in Sheet-Metal Roofing-Plates, of which thefollowing is a full and clear specification, reference being had to theaccompanying drawings, in which Figure l is a perspective view ofportions of a pair of roofing plates constructed and connected inaccordance with my invention; Fig. 2 a vertical transverse sectionalview showing the manner of interlocking adjacent plates; andFigs. 3, 4and 5 detail perspective views showing the application of my inventionto three different designs of roofing plates.

This invention has relation to that type of sheet metal roofing coveredby my former Patent No. 1,021,844, dated Apr. 2, 1912, in which is shownand covered a sheet metal roofing plate having an upstanding ridgeparallel with and a short distance from one edge and another similarlyshaped and dimensioned ridge parallel with and a short distance from itsother edge, the part of the plate outside of this latter ridge servingas a nailing flange, a longitudinal pocket-like channel being formedinside of and adjacent to this latter ridge and being less in heightthan the same, whereby the longitudinal edges of a series of such platesmay be overlapped and interlocked and the ridges of each pair ofadjacent plates fit closely upon each other their entire length to forma reinforced upstanding ridge. Since the grant of this patent this typeof sheet metal roofing has been extensively manufactured and used andwhile it has proven of great practical and commercial value experiencehas shown that occasionally, by reason of the large sizes of the roofingsheets, the expansion of the sheets is so great as to disconnect orunlock the upper sheet, the shoulders presented by the ridge beinginclined and thus permittlng the upper sheet while expanding to ride upover the ridge of the lower sheet; and with that class of roofing plateswhich are ornamented with intermediate ridges or embossings, theflattening or mashing out of these pressed up embossings tends to widenthe sheet sufliciently to disconnect the upper sheet from the lower one.

Specification of Letters Patent.

Application filed January 2, 1913.

Patented Mar. 17, 1914. Serial No. 739,779.

My present improvement is designed to so construct the interlockingjoint as to prevent this disconnection of the plates, the constructionbeing such that when the plates are once interlocked and nailed down itwill be practically impossible to dislodge or disconnect them withoutfirst removing the nails in the nailing flanges.

This improvement will be best understood if it be kept in mind that thistype of roofing plates is made in sizes very much larger than the wellknown metal shingles on the market, this type of roofin plate beingdesigned to take the place 01 these comparatively small shingles.

In the drawing a designates the main part of the plate, 6 the nailingflange formed along one of the longitudinal edges of the plate, a theupstanding inverted V or U- shaped ridge formed adjacent to the nailingflange, (Z the second similarly shaped ridge extending along the platenear the opposite edge thereof. To this extent the plate is constructedsimilarly to the plate in my former patent. At the junction of the innerwall 0 of the ridge 0 and the main part of the plate, there is formed alongitudinal fold a, being made by folding the metal of the plate uponitself. This fold extends the entire length of the sheet and projectsaway from the ridge, it being inclined upwardly with respect to theupper face of the plate a, thus forming a pocket or channel f between itand the roofing plate and which opens toward the ridge (Z. The otheredge of the plate, that is, the edge of the plate beyond the ridge (1 isfolded downwardly and backwardly upon itself to form a longitudinalchannel 9 which lies underneath the plate and opens toward the adjacentridge d.

It will be observed that when the edges of the sheets thus constructedare overlapped and interlocked in the manner illustrated, the ridge clfits closely down upon the ridge 0 and thus reinforce each other, whilethe fold e fits into the channel 9 and thus locks the free edge of thesheet to the previously nailed plate. It will be observed that by thisinterlocking arrangement it will be impossible to disconnect the platesby bulging them upwardly, so that high winds can have no effect upon theplates. It will be observed also that the proportions of the parts aresuch that when the edge of the sheet is started into the channel f theinner wall of the ridge cl will just engage over the apex of the ridge0, whereby when the upper plate is swung downwardly the inclination. ofthe contacting walls of the ridges and the upward inclination of thelongitudinal fold 6 will cause the plate to automatically seat itself inits locked position, in which position the walls of the channel 9closely hug the fold e and the walls of the upper ridge d closely hugthe under ridge 0, thus making a firm and very rigid seam.

It will be observed that the wall 0, that is, the wall of the ridgewhich is on the opposite side from the channel f is vertical, standingat approximately right angles to the body of the plate, and that thecorresponding wall of the upper ridge is likewise arranged at right an'les to the body of the plate. The object 0 this is to form a positivestop for the upper plate, so that undue expansion of the upper plateunder extreme heat cannot unlock and release the upper plate by forcifngits edge out of engagement with the look old 6.

It will be observed also that should. the roofing plates be embossed asshown in Figs. 3, 4; and 5 and these pressed up parts be flattened outby persons walking on the plates or otherwise, the vertical stop Wallswill prevent the upper plate being expanded sufficiently to disconnectthe edges of the sheets.

standing ridge extending along near one of its longitudinal edges, aportion of the plate outside of this ridge being folded under to form ahook like pocket or channel which opens toward said ridge, a secondridge similarly dimensioned and shaped formed along the plate near itsother longitudinal edge,

the portion of the plate outside this latter ridge forming a nailingflange, and a long1- tudinal rebent portion folded down at the junctionof the plate and the base of the last named ridge to form a longitudinalpocket or channel which opens toward the first mentioned ridge, theWalls of the ridges on the opposite] sides from' the pockets andchannels and the hooks respectively being at substantially right anglesto the body of the plate, whereby the interlocking parts of the sheetscannot be unfastened by expansion of the body-portion.

In testimony whereof I hereunto my signature in the presence of twowitnesses.

HENRY E. MOOMAVV. lVitnesses:

W. A.. IJEE SARA LEE.

